1011379380 has 192 divisors, whose sum is σ = 3177086976. Its totient is φ = 238336000.

The previous prime is 1011379373. The next prime is 1011379381. The reversal of 1011379380 is 839731101.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011379381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5295085 + ... + 5295275.

It is an arithmetic number, because the mean of its divisors is an integer number (16547328).

Almost surely, 2^1011379380 is an apocalyptic number.

1011379380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011379380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588543488).

1011379380 is an abundant number, since it is smaller than the sum of its proper divisors (2165707596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011379380 is a wasteful number, since it uses less digits than its factorization.

1011379380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 1011379380 is about 31802.1914339248. The cubic root of 1011379380 is about 1003.7788291304.

The spelling of 1011379380 in words is "one billion, eleven million, three hundred seventy-nine thousand, three hundred eighty".